Hi Jack
Sorry for the delay, I very much appreciate the patch you sent me in response to my question, but only now I've been able to look at it.
Unfortunately, it does not do what I was looking for:
- first of all, nothing is rendered on screen until the moment when you
capture a snapshot, and after capturing it, nothing is displayed again. I need to be able to always render the sceen, and save a snapshot only when a "rec" toggle is activated
- second, even if the gemwin has a size of 800x600, the scene is
rendered at 1600x1200, so I only see a small portion of the scene, that is exactly what I wanted to avoid
What I need is to have the very same image (which is an arbitrary scene composed of rectangles with live stream from the camera, however that does not matter very much) BOTH displayed at a low resolution, AND saved into images at a higher resolution, but the whole image must be displayed, not a portion of it.
The question is: is this possible at all?
Btw, the patch from Stéphan does not work either, it displays a black screen and saves invalid tiff files that photoshop cannot even read; by changing the image type to jpeg, I get black images saved.
Even looking at the patches, I don't understand well how [gemframebuffer] and [pix_write] work and how to combine them together (and with [separator] perhaps?) to get what I want......
Any further help will be greatly appreciated thanks m.
I have done this patch. It works with a [gemwin] with [dimen 800 600( and capture a picture with dimen = 1600x1200. Hoping it helps. ++
Jack
Le lundi 16 novembre 2009 à 01:41 +0100, Matteo Sisti Sette a écrit :
Hi,
I have to modify some patches made by another person.
In one of them, [pix_write] is used to save screenshots of the image being shown in the gemwin.
However, the user would like to be able to save a higher quality image, namely 2000x2000 (so it can be printed). To my knowledge (and to the knowledge of the person who made the patch), the only way to do this is to increase the resolution of the gemwin. But since the resolution of the screen cannot be increased so much, the complete image cannot be seen. The user wants to be able to still see the whole image (at its usual resolution of 480x480) while saving screenshots at a higher resolution.
So the question is: is it possible to save an image which is not the one being rendered into the gemwin? So that I can for example generate a big image, save it, reduce its size, and render the reduced image instead of the big one?
A slow-down due to great cpu consumption at the moment of "capturing" the image would be acceptable (though not desired, obviously) provided that it is limited to the moments when the image is captured.
Any idea?
P.S.: The image is being generared by "tiling" the image from a camera, i.e. repeating it: that's why it make sense to save the resulting image in a higher resolution: if the camera has for example a res of 640x480 and it is being repeated in a 5x5 grid, up to 3200x2400 resolution "makes sense" for the saved image.
Thank you very much m.